Other includes
all other categories (e.g. entertainment, personal care products and
services, and payments to pension plans).

SOURCE

U.S.
Department of Transportation, Bureau of Transportation Statistics, calculated
based on data from U.S. Department of Commerce, Bureau of Economic Analysis, National Income and Product Account Tables, available at
http://www.bea.gov/national/nipaweb/Index.asp as of Oct. 19, 2010.